Support go to implementation for method/function

[khsing]

go to implementation just to works on import/definition section. It's not work for method of entity.

how to make it works.

Environment

• Operating System: macOS 10.14.4 (18E226)
• JDK version: java version "1.8.0_201"
• Visual Studio Code version: 1.33.1 (1.33.1)
• Java extension version: 0.42.1

Steps To Reproduce

1. move cursor to a method of entity object.
2. cmd+F12 will display no implementation found, but actually it exists.

Current Result

Expected Result

cmd+F12 should go to method of implementation directly.

Additional Informations

[fbricon]

Works for me. Can you give us more details on your setup? Maven, Gradle, Eclipse project or standalone Java files? Do you use lombok? Providing a sample project to reproduce the issue would help.
Can you enable verbose logging and attach the content of the Output view (select Language support for Java in the view menu)?

[fbricon]

[khsing]

Hi @fbricon

for example:

public interface FoobarInterface {
    public String foo();
}

Implementation

public class Foobar implements FoobarInterface {
    public String foo(){
        return "hello";
    }
}

Other service

public class FoobarService {
    private FoobarInterface foobar;
    
    public void bar(){
        foobar.foo(); // if my cursor at foo() and go to implementation, it should jump to FooBar.foo directly, but no implementation found error appears.
    }
}

It's a maven based sprint-boot project and not using lombok.

[testforstephen]

This is a bug of eclipse.jdt.ls. Go to implementation only works when selecting a method declaration, and doesn't handle well for the method invocation.